A display apparatus includes a light-emitting diode, a driving transistor configured to control a driving current supplied to the light-emitting diode, a compensation transistor connected between a second terminal of the driving transistor and a gate electrode of the driving transistor and configured to compensate for a threshold voltage of the driving transistor, a first connection electrode configured to connect the gate electrode of the driving transistor and a first terminal of the compensation transistor to each other, and a driving voltage line on an insulating layer covering the first connection electrode, covering the gate electrode of the driving transistor, and having an opening overlapping the first connection electrode.

A display apparatus includes a light-emitting diode, a driving transistor configured to control a driving current supplied to the light-emitting diode, a compensation transistor connected between a second terminal of the driving transistor and a gate electrode of the driving transistor and configured to compensate for a threshold voltage of the driving transistor, a first connection electrode configured to connect the gate electrode of the driving transistor and a first terminal of the compensation transistor to each other, and a driving voltage line on an insulating layer covering the first connection electrode, covering the gate electrode of the driving transistor, and having an opening overlapping the first connection electrode.

Provided is a display device capable of suppressing a decrease in light emission luminance.

The display device includes a plurality of inorganic light emitting diodes arranged two-dimensionally and a plurality of organic light emitting diodes arranged two-dimensionally. At least one of the organic light emitting diodes is provided on an upper portion of or above at least one of the inorganic light emitting diodes or on a lower portion of or below at least one of the inorganic light emitting diodes.

Provided is a display device capable of suppressing a decrease in light emission luminance.

The display device includes a plurality of inorganic light emitting diodes arranged two-dimensionally and a plurality of organic light emitting diodes arranged two-dimensionally. At least one of the organic light emitting diodes is provided on an upper portion of or above at least one of the inorganic light emitting diodes or on a lower portion of or below at least one of the inorganic light emitting diodes.

Structures and methods are disclosed for fabricating a color optoelectronic solid state array device. In one embodiment, different color devices and optical structures are combined to form a color optoelectronic solid state array. The optical structure comprise of light distribution layer, light extraction layer, waveguide, reflective layers, linear color combinator. In another embodiment, a method to combine light colors in a color microdevice array is disclosed.

Structures and methods are disclosed for fabricating a color optoelectronic solid state array device. In one embodiment, different color devices and optical structures are combined to form a color optoelectronic solid state array. The optical structure comprise of light distribution layer, light extraction layer, waveguide, reflective layers, linear color combinator. In another embodiment, a method to combine light colors in a color microdevice array is disclosed.

An organic light emitting diode (OLED) including at least one emitting material layer (EML) disposed between two electrodes and comprising a first compound including a fused hetero aromatic ring with at least one nitrogen atom and a second compound of a boron-based compound and an organic light emitting device including the OLED is disclosed. The first compound and the second compound may be the same emitting material layer or adjacently disposed emitting material layers. The OLED can lower its driving voltage and improve its luminous efficiency using the first and second compounds with adjusting their energy levels.

An organic light emitting diode (OLED) including at least one emitting material layer (EML) disposed between two electrodes and comprising a first compound including a fused hetero aromatic ring with at least one nitrogen atom and a second compound of a boron-based compound and an organic light emitting device including the OLED is disclosed. The first compound and the second compound may be the same emitting material layer or adjacently disposed emitting material layers. The OLED can lower its driving voltage and improve its luminous efficiency using the first and second compounds with adjusting their energy levels.